Finding the Fourth Proportional to 10,478.28, 14,456.48 and 5,940.47

Step by Step Solution

1. Step 1: Write the proportion equation
   10,478.28 : 14,456.48 = 5,940.47 : x
2. Step 2: Convert to fraction form
   10,478.28/14,456.48 = 5,940.47/x
3. Step 3: Cross multiply
   10,478.28x = 14,456.48 × 5,940.47
4. Step 4: Simplify right side
   10,478.28x = 85,878,342.31
5. Step 5: Solve for x
   x = 85,878,342.31/10,478.28
6. Step 6: Final answer
   x = 8,195.84